名校
1 . 已知数列
的通项公式是
,前
项和为
,则数列
的前11项和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed57135484eeede921fbdc2d46116a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-12-29更新
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4卷引用:广西陆川县中学2018届高三开学考试数学(文)试题